Soulnote Launches Advanced M-3X Monoblock Power Amplifier
By HiFi Editorial24 October 2025
Key Highlights
Redesigned power supply delivers double the output current, improving performance and reliability.
Innovative transistor balancing ensures stable amplification with robust 240W output at 2.7Ω.
Copper radiators enhance thermal management and electrical efficiency while reducing footprint.
Soulnote has unveiled the new M-3X monoblock power amplifier, marking a significant advancement from its predecessor, the M-3. Released on April 1st in Japan, the M-3X features a redesigned power supply with double the output current, enhancing both performance and reliability. Available in Premium Silver and Premium Black finishes, the amplifier is priced at 1,911,800 yen (~1,650,000 RUB).
At the heart of the M-3X lies a novel transistor balancing scheme that meticulously aligns the current amplification factors (hfe) of its transistors. This innovative pairing method ensures stability and consistency in amplification, even as transistor currents fluctuate during playback. The output stage employs a pair of TO3 transistors in a four-stage Darlington configuration, effectively delivering a robust 240W maximum output at 2.7Ω. Additionally, the use of copper radiators not only reduces the unit's footprint but also serves as the power bus bar, enhancing thermal management and electrical performance.
